/* 全局基础样式重置 */
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    color: #333;
    line-height: 1.6;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(49deg, #0d73a3 0%, #196e6c 100%)
}

/* 页面通用容器 */
.wrap-box {
    width: 100%;
    max-width: 1200px;
    padding-left: 20px;
    padding-right: 20px;
    margin-left: auto;
    margin-right: auto;
}

/* 顶部导航栏区域样式 */
.page-top-nav {
    width: 100%;
    top: 0;
    position: fixed;
    z-index: 1000;
    background-color: linear-gradient(135deg, #02886b 0%, #02171e 100%)
    padding-top: 15px;
    padding-bottom: 15px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    font-weight: 500;
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #f0f0f0;
}

.download-btn {
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    padding: 10px 20px;
    color: #fff;
    font-weight: bold;
    text-decoration: none;
    background-color: rgba(255, 255, 255, 0.2);
    transition: all 0.3s;
}

.download-btn:hover {
    transform: translateY(-2px);
    background-color: rgba(255, 255, 255, 0.3);
}

/* 首屏Banner区域 */
.banner-main {
    text-align: center;
    color: #fff;
    padding-top: 120px;
    padding-bottom: 80px;
}

.banner-main h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-main p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.button-group-row {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.base-btn {
    font-weight: bold;
    text-decoration: none;
    border-radius: 30px;
    padding: 15px 30px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
}

.primary-theme-btn {
    background-color: #ffffff;
    color: #667eea;
}

.second-theme-btn {
    border: 2px solid #fff;
    background: transparent;
    color: #ffffff;
}

.base-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* 核心功能区块 */
.func-block {
    background-color: #fff;
    padding: 80px 0;
}

.block-title {
    text-align: center;
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 50px;
}

.func-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.func-item-card {
    text-align: center;
    background-color: #f8f9fa;
    border-radius: 15px;
    padding: 40px 30px;
    transition: box-shadow 0.3s, transform 0.3s;
}

.func-item-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.func-icon-box {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 20px;
}

.func-item-card h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 15px;
}

/* 操作步骤区块 */
.step-block {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.step-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step-item-card {
    background-color: #fff;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.step-num-mark {
    width: 50px;
    height: 50px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(45deg, #0eda91, #0a5aa8);
}

/* APP下载区块 */
.app-download-block {
    color: #fff;
    text-align: center;
    padding: 100px 0;
    background: linear-gradient(49deg, #0d73a3 0%, #196e6c 100%)
}

.app-download-block h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.app-download-block p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.download-button-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.platform-download-btn {
    background-color: #fff;
    color: #667eea;
    font-weight: bold;
    text-decoration: none;
    border-radius: 10px;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: transform 0.3s;
}

.platform-download-btn:hover {
    transform: translateY(-3px);
}

/* APP预览容器 */
.app-view-box {
    max-width: 300px;
    margin: 0 auto;
    padding: 20px;
    border-radius: 20px;
    background-color: #fff;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.app-view-box img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    display: block;
}

/* 页面底部样式 */
.page-footer {
    background-color: #333;
    color: #fff;
    padding-top: 60px;
    padding-bottom: 30px;
}

.footer-main-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col-block h3 {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 20px;
}

.footer-col-block ul {
    list-style: none;
}

.footer-col-block ul li {
    margin-bottom: 10px;
}

.footer-col-block a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col-block a:hover {
    color: #ffffff;
}

.copyright-text {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #555;
    color: #ccc;
}

/* 移动端响应式适配 */
@media (max-width: 768px) {
    .nav-bar {
        flex-wrap: wrap;
        flex-direction: row;
        padding: 0 10px;
        justify-content: space-between;
        align-items: center;
    }

    .brand-logo {
        order: 1;
        font-size: 20px;
    }

    .nav-links {
        order: 2;
        width: 100%;
        justify-content: center;
        margin: 10px 0;
    }

    .nav-links li {
        margin: 0 10px;
    }

    .download-btn {
        order: 3;
        margin-top: 10px;
    }

    .banner-main {
        padding-top: 140px;
        padding-bottom: 60px;
    }

    .banner-main h1 {
        font-size: 2rem;
    }

    .button-group-row {
        flex-direction: column;
        align-items: center;
    }

    .download-button-row {
        flex-direction: column;
        align-items: center;
    }
}